US9102659B2 - Multifunctional nitroxide derivatives and uses thereof - Google Patents

Multifunctional nitroxide derivatives and uses thereof Download PDF

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US9102659B2
US9102659B2 US13/992,396 US201113992396A US9102659B2 US 9102659 B2 US9102659 B2 US 9102659B2 US 201113992396 A US201113992396 A US 201113992396A US 9102659 B2 US9102659 B2 US 9102659B2
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guanidine
hydroxy
cyano
compound
alkyl
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US20130338146A1 (en
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Prakash Jagtap
Andrew Lurie Salzman
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Tisbury Pharmaceuticals Inc
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RADIKAL THERAPEUTICS Inc
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Definitions

  • R 3 each independently is selected from (C 1 -C 8 )alkyl, (C 2 -C 8 )alkenyl, or (C 2 -C 8 )alkynyl;
  • the multifunctional nitroxide derivatives and pharmaceutical compositions of the invention are useful for treatment, prevention and/or managing of diseases, disorders and conditions associated with high levels of reactive oxygen species (ROS) and oxidative stress.
  • ROS reactive oxygen species
  • the present invention provides a multifunctional nitroxide derivative of the general formula I as defined above, or an enantiomer, diastereomer, racemate, or a pharmaceutically acceptable salt, solvate or prodrug thereof, for use in treatment of a disease, disorder or condition associated with high levels of ROS, and oxidative stress.
  • FIG. 1 shows the mean arterial pressure (mmHg) measured in rats subjected to a model of myocardial ischemia-reperfusion (I/R) injury (MIRI) as described in Example 11, indicating that compound 2, when administered prior to reperfusion at 1 mg/kg IV bolus followed by a continuous IV infusion of 2 mg/kg/h, did not produce systemic hypotension.
  • MIRI myocardial ischemia-reperfusion
  • alkylene typically means a divalent straight or branched hydrocarbon radical having 1-8 carbon atoms and includes, e.g., methylene, ethylene, propylene, butylene, 2-methylpropylene, pentylene, 2-methylbutylene, hexylene, 2-methylpentylene, 3-methylpentylene, 2,3-dimethylbutylene, heptylene, octylene and the like.
  • the multifunctional nitroxide derivative of the present invention is a compound of the general formulas Ia-1 to Ia-9, a compound of the general formula Ib-1 to Ib-3, or a compound of the general formula Ic-1 to Ic-9, wherein R 4 is H.
  • the multifunctional nitroxide derivative of the invention is a compound of the general formula I, wherein Y is CH; X is absent; R 2 is H; R 3 is methyl; and R 1 is F, Cl or Br, linked to the phenyl ring at position ortho, meta or para with respect to A, i.e., the oxy radical of 2-cyano-1-(2-fluoro phenyl)-3-(1-hydroxy-2,2,5,5-tetramethylpyrrolidin-3-yl)guanidine, 2-cyano-1-(2-chlorophenyl)-3-(1-hydroxy-2,2,5,5-tetramethylpyrrolidin-3-yl)guanidine, or 2-cyano-1-(2-bromophenyl)-3-(1-hydroxy-2,2,5,5-tetramethylpyrrolidin-3-yl) guanidine (compounds 23 a -23 c , respectively); 2-cyano-1-(3-fluorophenyl)-3
  • compound 2 significantly reduced both myocardial myeloperoxidase (MPO) ( 2 A) and tissue infarction ( 2 B).
  • MPO myocardial myeloperoxidase

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US20170107198A1 (en) 2017-04-20
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CA2820763A1 (en) 2012-06-14
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